SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (10): 2383-2389.DOI: 10.1016/j.cjche.2018.12.019

• Separation Science and Engineering • 上一篇    下一篇

Concentration control of volatile organic compounds by ionic liquid absorption and desorption

Xiaobin Ma1, Minyan Wu1, Shuo Liu2, Jinxing Huang2, Bin Sun1, Ying Zhou1, Qiulian Zhu1, Hanfeng Lu1   

  1. 1 Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
    2 Hangzhou Runxin Technology Co. Ltd., Hangzhou 310014, China
  • 收稿日期:2018-11-26 修回日期:2018-12-24 出版日期:2019-10-28 发布日期:2020-01-17
  • 通讯作者: Hanfeng Lu
  • 基金资助:
    Supported by the Zhejiang University Students Science and Technology Innovation Activity Plan Funding (No. 2018R403078).

Concentration control of volatile organic compounds by ionic liquid absorption and desorption

Xiaobin Ma1, Minyan Wu1, Shuo Liu2, Jinxing Huang2, Bin Sun1, Ying Zhou1, Qiulian Zhu1, Hanfeng Lu1   

  1. 1 Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
    2 Hangzhou Runxin Technology Co. Ltd., Hangzhou 310014, China
  • Received:2018-11-26 Revised:2018-12-24 Online:2019-10-28 Published:2020-01-17
  • Contact: Hanfeng Lu
  • Supported by:
    Supported by the Zhejiang University Students Science and Technology Innovation Activity Plan Funding (No. 2018R403078).

摘要: Volatile organic compounds (VOCs) are difficult to be eliminated safely and effectively because of their large concentration fluctuations. Thus, maintaining a stable concentration of VOCs is a significant study. In this research, H2O, Tween-80,[Emim]BF4,[Emim]PF6, and[Hnmp]HSO4 were applied to absorb and desorb simulated VOCs. The ionic liquid[Emim]BF4 demonstrated the best performance and was thus selected for further experiments. As the ionic liquid acted as a buffer, the toluene concentration with a fluctuation of 2000-20000 mg·m-3 was stabilized at 6000-12000 mg·m-3. Heating distillation (90℃) was highly efficient to recover[Emim]BF4 from toluene. The regenerated[Emim]BF4 could retain its initial absorption capacity even after multiple cycles. Moreover,[Emim]BF4 had the same buffer function on various aromatic hydrocarbons.

关键词: Volatile organic compounds, Concentration fluctuation, Absorb and desorb, Ionic liquid, Buffer

Abstract: Volatile organic compounds (VOCs) are difficult to be eliminated safely and effectively because of their large concentration fluctuations. Thus, maintaining a stable concentration of VOCs is a significant study. In this research, H2O, Tween-80,[Emim]BF4,[Emim]PF6, and[Hnmp]HSO4 were applied to absorb and desorb simulated VOCs. The ionic liquid[Emim]BF4 demonstrated the best performance and was thus selected for further experiments. As the ionic liquid acted as a buffer, the toluene concentration with a fluctuation of 2000-20000 mg·m-3 was stabilized at 6000-12000 mg·m-3. Heating distillation (90℃) was highly efficient to recover[Emim]BF4 from toluene. The regenerated[Emim]BF4 could retain its initial absorption capacity even after multiple cycles. Moreover,[Emim]BF4 had the same buffer function on various aromatic hydrocarbons.

Key words: Volatile organic compounds, Concentration fluctuation, Absorb and desorb, Ionic liquid, Buffer